/*
 * Copyright 2002-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.lee.util.xml;

import javax.xml.transform.ErrorListener;
import javax.xml.transform.TransformerException;

import org.apache.commons.logging.Log;

/**
 * Simple {@code javax.xml.transform.ErrorListener} implementation: logs warnings using the given Commons Logging logger
 * instance, and rethrows errors to discontinue the XML transformation.
 *
 * @author Juergen Hoeller
 * @since 1.2
 */
public class SimpleTransformErrorListener implements ErrorListener {

    private final Log logger;

    /**
     * Create a new SimpleTransformErrorListener for the given Commons Logging logger instance.
     * 
     * @param logger logger
     */
    public SimpleTransformErrorListener(Log logger) {
        this.logger = logger;
    }

    @Override
    public void warning(TransformerException ex) throws TransformerException {
        logger.warn("XSLT transformation warning", ex);
    }

    @Override
    public void error(TransformerException ex) throws TransformerException {
        logger.error("XSLT transformation error", ex);
    }

    @Override
    public void fatalError(TransformerException ex) throws TransformerException {
        throw ex;
    }

}
